Horton

Re: Table AM Interface Enhancements

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: Alexander Korotkov <aekorotkov@gmail.com>
Cc: Pavel Borisov <pashkin.elfe@gmail.com>, Japin Li <japinli@hotmail.com>, Mark Dilger <mark.dilger@enterprisedb.com>, pgsql-hackers@lists.postgresql.org
Date: 2024-04-07T21:40:01Z
Lists: pgsql-hackers 
Hi,

On 2024-03-30 23:33:04 +0200, Alexander Korotkov wrote:
> I've pushed 0001, 0002 and 0006.

I briefly looked at 27bc1772fc81 and I don't think the state post this commit
makes sense. Before this commit another block based AM could implement analyze
without much code duplication. Now a large portion of analyze.c has to be
copied, because they can't stop acquire_sample_rows() from calling
heapam_scan_analyze_next_block().

I'm quite certain this will break a few out-of-core AMs in a way that can't
easily be fixed.


And even for non-block based AMs, the new interface basically requires
reimplementing all of analyze.c.

What am I missing here?

Greetings,

Andres Freund

Commits

  1. Remove extra comment at TableAmRoutine.scan_analyze_next_block

  2. revert: Generalize relation analyze in table AM interface

  3. Revert: Allow table AM to store complex data structures in rd_amcache

  4. Revert: Allow table AM tuple_insert() method to return the different slot

  5. Revert: Allow locking updated tuples in tuple_update() and tuple_delete()

  6. Revert: Let table AM insertion methods control index insertion

  7. Revert: Custom reloptions for table AM

  8. Provide a way block-level table AMs could re-use acquire_sample_rows()

  9. Custom reloptions for table AM

  10. Use streaming I/O in ANALYZE.

  11. Revert "Custom reloptions for table AM"

  12. Let table AM insertion methods control index insertion

  13. Generalize relation analyze in table AM interface

  14. Improve error message for tts_(virtual|minimal)_is_current_xact_tuple

  15. Add comments on some MinimalTupleSlots methods usage

  16. Add TupleTableSlotOps.is_current_xact_tuple() method

  17. Allow table AM tuple_insert() method to return the different slot

  18. Allow table AM to store complex data structures in rd_amcache